Off‐grid DOA estimation of incoherently distributed non‐circular sources via generalised approximate message passing
Xuemin Yang, Zhi Zheng, Bin Hu · Electronics Letters · 2016
A new off‐grid direction‐of‐arrival (DOA) estimation method based on a parametric sparse representation model is addressed for incoherently distributed non‐circular sources. The parametric sparse representation model exploits the signal non‐circularity to double the number of measurements, and is parameterised by the angular spread and the quantisation error. On the basis of this model, an improved generalised approximate message passing technique is utilised to estimate the central DOA. Numerical simulations are provided to illustrate the excellent performance of the proposed method.